ML20205F124
| ML20205F124 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 03/24/1987 |
| From: | PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | |
| Shared Package | |
| ML19292H013 | List: |
| References | |
| NUDOCS 8703310093 | |
| Download: ML20205F124 (8) | |
Text
PBAPS Unit 2 LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS
.3.5.I Average Planar LHGR 4.5.I Average Planar LHGR During power operation, the APLHGR The APLHGR for each type of fuel for each type of fuel as a function as a function of average planar of axial location and average planar exposure shall be checked daily exposure shall be within limits during reactor operation at based on applicable APLHGR limit 1 25% rated thermal power.
values which have been approved for the respective fuel and lattice types.
When hand calculations are required, the APLHGR for each type of fuel as a function of average planar exposure shall not exceed the limit for the most limiting lattice (excluding natural uranium) shown in the applicable figures for BP/P8X8R, GE8X8EB and LTA310 fuel types during two recirculation loop operations. During single loop operation, the APLHGR for each fuel type shall not exceed the above values multiplied by the following reduction factors: 0.79 for BP/P8X8R fuel and 0.73 for GE8X8EB and LTA310 fuel. If at any time during operation it is determined by normal surveillance that the limiting value of APLHGR is being exceeded, action shall be initiated within one (1) hour to restore APLHCR to within prescribed limits. If the APLHGR is not returned to within prescribed limits within five (5) hours reactor power shall be decreased at a rate which would bring the reactor to the cold shutdown condition within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> unless APLHGR is returned to within limits during this period.
Surveillance and corresponding action shall continue until reactor operation is within the prescribed limits.
3.5.J Local LHGR 4.5.J Local LHGR During power operation, the linear The LHGR as a function of core heat generation rate (LHGR) of any height shall be checked daily rod in any fuel assembly at any during reactor operation at axial location shall not exceed 3 25% rated thermal power.
design LHGR.
LHGR < LHGRd LHGRd = Design LHGR 13.4 KW/ft for BP/P8X8R fuel 14.4 KW/ft for GE8X8EB and LTA310 fuel
-133a-8703310093 870324 PDR ADOCK 05000277 p
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PBAPS Unit 2 3.5 BASES (Cont'd.)
.H.
Engineering Safeguards Compartments Cooling and U9ntilation One unit cooler in each pump compartment is capable of providing.
adequate ventilation flow and cooling.
Engineering analyses indicated that the temperature rise in safeguards compartments without adequate ventilation flow or cooling is such that continued operation of the safeguards equipment or associated auxiliary equipment cannot be assured.
Ventilation associated with the High Pressure Service Water Pumps is also associated with the Emergency Service Water pumps, and is specified in Specification 3.9.
I.
Average Planar LHGR This specification assures that the peak cladding temperature following the postulated design basis loss-of-coolant accident will l
not exceed the limit specified in the 10 CFR Part 50, Appendix K.
The peak cladding temperature (PCT) following a postulated loss-of-l coolant accident is primarily a function of the average heat i
generation rate of all the rods of a fuel assembly at any axial
~
location and is only dependent, secondarily, on the rod-to-rod power distribution within an assembly.
The peak clad temperature is calculated assuming a LHGR for the highest powered rod which is equal i
to or less than the design LHGR.
This LHGR times 1.02 is used in the i
heat-up code along with the exposure dependent steady state gap conductance and rod-to-rod local peaking factors.
The Technical Specification APLHGR is the LHGR of the highest powered rod divided by its local peaking factor.
The limiting value for APLHGR is shown in j
the applicable figure for each fuel type.
g i
Only the most limiting and least limiting APLHGR operating limits are shown in the figures for the multiple lattice fuel types.
Compliance l
with the lattice-specific, approved APLHGR limits is ensured by using the process computer.
When an alternate method to the process computer is required (i.e. hand calculations and/or alternate computer simulation), the most limiting lattice APLHGR limit for each fuel type shall be applied to every lattice of that fuel type.
The calculational procedure used to establish the APLHGR is based on a i
loss-of-coolant accident analysis.
The analysis was performed using l
General Electric (G.E.) calculational models which are consistent with j
the requirements of Appendix K to 10 CPR Part 50.
A complete discussion of each code employed in the analysis is presented in Reference 4.
Input and model changes in the Peach Bottom loss-of-coolant analysis which are different from the previous analyses performed with Reference 4 are described in detail in Reference 8.
These changes to the analysis include: (1) consideration of the counter current flow limiting (CCFL) effect, (2) corrected code inputs, and (3) the effect of drilling alternate flow paths in the bundle lower tie plate.
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-i
- i GENERAL ELECTRIC COMPANY AFFIDAVIT I, Ricardo Artigas, being duly sworn, depose and state as follows:
1.
I am Manager, Licensing and Consulting Services, General Electric Company, and have been delegated the function of reviewing the information described in paragraph 2 which is sought to be withheld and have been authorized to apply for its withholding.
2.
The information sought to be withheld is contained in
" Loss-of-Coolant Accident Analysis for Peach Bottom Atomic Power Station Unit 2, Supplement 1" NEDE-24081-P-1 Supplement 1, Revision 1, March 1987.
3.
In designating material as proprietary, General Electric utilizes the definition of proprietary information and trade secrets set 1
forth in the American Law Institute's Restatement of Torts, Section 757. This definition provides:
"A trade secret may consist of any formula, pattern, device or compilation of information which is used in one's business and which gives him an opportunity to obtain an advantage over competitors who do not know or use it....
A substantial element of secrecy must exist, so that, except by the use of improper means, there would be difficulty in acquiring information....
Some factors to be considered in determining whether given information is one's trade secret ares (1) the extent to which the information is known outside of his business; (2) the extent to which it is known by employees and others involved in his business; (3) the extent of measures taken by him to guard the secrecy of the informations (4) the value of the informatien to him and to his competitors; (5) the amount of effort or money expended by him in developing the information; (6) the ease or difficulty with the which the information could be properly acquired or duplicated by others."
4.
Some examples of categories of information which fit into the definition of proprietary information are a.
Information that discloses; a process, method or apparatus where prevention of its use by General Electric's competitors without license from General Electric constitutes a competitive economic advantage over other companies; b.
Information consisting of supporting data and analyses, including test data, relative to a process, method or apparatus, the application of which provide a competitive economic advantage, e.g., by optimization or improved marketability;
.t.
L Informacion which if used by a competitor, would reduce his c.
expenditure of resources or improve his competitive position in the design, manufacture, shipment, installation, assurance of quality or licensing of a similar product;
-d.
Information which reveals cost or price information, production capacities, budget levels or commercial strategies of General Electric, its customers or suppliers; Information which reveals aspects of past, present or future s.
General Electric customer-funded development plans and programs of potential commercial value to General Electric; f.
Information which discloses patentable subject matter for which it may be desirable to obtain patent protection; 1
Information which General Electric must treat as proprietary g.
according to agreements with other parties.
5.
Initial approval of proprietary treatment of a document is typically made by the Subsection manager of the originating component, the person who is most likely to be acquainted with the value and sensitivity of the information in relation to industry knowledge. Access to such documents within the Company is limited on a "need to know" basis and such documents are clearly identified as proprietary.
6.
The procedure for approval of external release of such a document typically requires review by the Subsection Manager, Project Manager, Principal Scientist or other equivalent authority, by the Subsection Manager of the cognizant Marketing function (or delegate) and by the Legal Operation for technical content, competitive effect and determination of the accuracy of the' proprietary designation in accordance with the standards enumera ted above. Disclosures outside General electric are generally limited to regulatory bodies, customers and potential customers and their' agents, suppliers and licensees then only with appropriate protection by applicable regulatory provisions or proprietary agreements.
7.
The document mentioned in paragraph 2 above has been evaluated in accordance with the above criteria and procedures and has been found to contain information which is proprietary and which is customarily held in confidence by General Electric.
8.
The document mentioned in paragraph 2 above is classified as proprietary because it contains details concerning current and future General Electric fuel designs which were developed at considerable expense to General Electric and which are not available to other parties. -
_ _ _ _ ___ _ _ J
r
.c 9.
The information to the best of my knowledge and belief has
. consistently been held in confidence by the General Electric Company, no public disclosure has been made, and it is not available in public sources.
All disclosures to third parties have been made pursuant to regulatory provisions of proprietary agreements which provide for maintenance of the information in confidence.
- 10. Public disclosure of the information sought to be withheld is likely to cause substantial harm to the competitive position of the General Electric Company and deprive or reduce the availability of project making opportunities because it would provide other parties, including competitors, with valuable information regarding current and future General Electric fuel designs which were obtained at considerable cost to the General Electric Company. The man power, computer and manufacturing resources expended by General Electric to develop the current fuel designs are valued at.
approximately $8 million. In addition, the development of individual bundle and lattice designs require over 120 man-hours and approximately $20,000 in computer resources.
STATE OF CALIFORNIA
) as:
COUNTY OF SANTA CLARA
)
. Ricardo Artigas, being duly sworn, deposes and says:
That he has read the foregoing affidavit and the matters stated therein are true and correct to the best of his knowledge, information, and belief.
Executed at San Jose, California, this da f
AC4fi 1987.
f I,d A U
Ricardo Aset{is
~
l General Electtic Company Subscribed and sworn before me this yofYbe.tch-1983 I
i' Q..og g O
(
N6TARY PUBLIC,' STATE 0 @ LIFOR7N A
~
.jh e
p fga. NOTARY PUBLIC CALff0RNIA l
My :u.u, evires RN 13, 1989 l
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